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Software Testing is an important phase in the software development lifecycle because it involves locating and identifying bugs in the programme as well as ensuring that the software is error free. Testing is analogous to "quality control" and is what guarantees quality in the development of software. Unit testing, integration testing, functional testing, performance testing, acceptance testing, etc., are just some of the many types of testing that are performed at various points throughout the process.Unit testing is carried out concurrently with the coding of a computer programme or application. In this type of testing, the smaller, more easily testable ... Read More
The cloud is a hot topic for companies of all sizes, from start-ups to multinational corporations. It is more important than ever to gain an insight into the distinctions between the various cloud services as well as the benefits they offer before migrating your company's operations to the cloud, whether it be for the deployment of applications or infrastructure.Read through this article to get a clear understanding of IaaS and PaaS, and how these two cloud services are different from each other.What is IaaS?IaaS, which stands for Infrastructure as a Service, is a model for providing computing infrastructure in the ... Read More
Red Hat developed the Hibernate framework, which is also referred to as Hibernate Object Relational Mapper (ORM). The first version of this object-relational mapping tool for the Java programming language was made available for download on May 23, 2007. Hibernate supports a Java Virtual Machine (JVM) that works across several platforms, and it is written in Java."JPA" stands for Java Persistence API. It is a tool to manage relational data. In its most basic form, JPA is a specification. It addresses either the object metadata or the relationship metadata. Java Persistence Query Language (JPQL) is the language that is used by ... Read More
Hadoop was built to store and analyze large volumes of data across several computer clusters. It's a group of software programs that construct a data processing framework. This Java-based framework can process enormous amounts of data quickly and cheaply.Hadoop's core elements include HDFS, MapReduce, and the Hadoop ecosystem. The Hadoop ecosystem is made up of many modules that help with system coding, cluster management, data storage, and analytical operations. Hadoop MapReduce helps analyze enormous amounts of organized and unstructured data. Hadoop's parallel processing uses MapReduce, while Hadoop is an Apache Software Foundation trademark.Millions of people use MongoDB, an open-source NoSQL ... Read More
The acronym CGI and the programming language Perl are frequently confused for one another. Both of these are frequently referred to as "CGI Perl." These two terms refer to two distinct concepts. Your comprehension of both of these terms will improve if you are aware of the unique characteristics that distinguish each of them.What is CGI?CGI, or Common Gateway Interface, is a rule set that governs how data can be transferred between web servers and scripts written in programming languages. The use of CGI programmes enables the sending of data in a variety of formats, including audio clips, photographs, documents, ... Read More
In this tutorial, we will learn to get a timestamp in JavaScript. It never happens that software developers or application developers don’t require to play with date and time. In many situations, they are required to play with date and timestamp. For example, to show the time on the user’s dashboard, save the time of an operation in the database.Now, let’s understand what the timestamp is? The timestamp is the total number of milliseconds from the 1st January 1970 from when UNIX epochs begin. Using the timestamp, we can extract the date, day, year, month, hours, minutes, second, milliseconds, etc.So, ... Read More
In this tutorial, we will learn to find out the caller function in JavaScript. The function is the reusable code, and users can call it from anywhere. But sometimes, they need to know who is the caller function to perform some operation.For example, suppose that we can call any single function from another 2 to 3 functions, and we need to perform some operation according to the caller function. Users can understand this scenario by the below code example.function func3 () { If ( caller is func2() ) { // code for some operation } else if ( caller is func1() ){ // code for some different operation } ... Read More
This tutorial will teach us to access the matched groups in JavaScript regular expression. The regular expression is the sequence of the character, also called the RegEx, and it is useful to match specific patterns in the string.There can be more than one match for the specific pattern in the string. To get the occurrence of all matches, we have explained the different methods below in this tutorial.We will also see the various usage of the regular expression in this article.Use the ‘g’ flag while creating the RegexWhen we add ‘g’ as the modifier in the regular expression, it searches ... Read More
This article will teach you how to create a JavaScript recursive function-a function that calls itself-using the recursion method. The process of recursion involves calling itself. Recursive functions are those that call themselves repeatedly. A condition to cease calling itself is always included in recursive functions. Otherwise, it will continue to call itself. Recursive functions are typically used to divide a large issue into smaller ones. Recursive functions are frequently found in data structures like binary trees, graphs, and algorithms like binary search and quick-sort.A recursive function is not immediately clear or simple to comprehend. You will read and comprehend ... Read More
In this article, we will learn how to work with a return statement in JavaScript. A specific value from the function is returned to the function caller using the return statement. Whenever the return statement is run, the function will stop. The code that follows the return statement won't be available, due to which it is the last statement in a function.Using the return statement, we may return object types, including functions, objects, arrays, and primitive values like Boolean, integer, and string.By using the return statement, we can also return many items. Immediate action is not viable. To return several ... Read More